Subsoiler



Dec. 12, 1950 c. 1.. (:00K EI'AL SUBSOILER 2 Sheets-Sheet 1 Filed Dec. 6, 1945 INVENTOR S ND CURTISS L. COOK A TTORNEYS.

Dec. 12, 1950 c. L. cooK EI'AL SUBSOILER 2 Sheets-Sheet 2 Filed Dec. 6, 1945 INVENTORS AUSTIN E.YOUNG C RTI S L. COOK Patented Dec. 12, 1950 UNITED STAT ES OFF-l CE 2,533,435; SUBSOILER Curtiss L. Cook and Austin E} Yo ng, syraciise N. Y., assignors to Syracujsje Qhil'led Plow 60;, Inc., Syracuse, N. Y., a corporation of New York Application Deeemher 6, 194 Serial. NQ-r fi3c afifii 10 Claims.

The present invention relates generally to agricultural implements and more particularly to soil working tools.

The object and general nature of thep i6S'ent invention is the provision of a new and improved subsoil plow or subsoil breaker especially adapted for general subsoil breakage but. which, is, so constructed and arranged that, the subsoil point is releasable after contact with a stone or' other obstruction in the ground. Heretofore', when operating with prior known subsoilers if the same should happen to become engaged under a stone or other obstruction, it was frequently necessary to unhook the tractor and drive around to the rear of the subsoiler and hitch to the rear end thereof in order to pull the subsoiler away from the obstruction. The principal feature oi the present invention lies in the provision of a subsoiler in which the subsoiler point is carried upon a shank that is pivoted to the frame. or beam of the plow and normally held in operating position against rearward swinging by suitable latch means but in which provision is made for releasing the latch whenever necessaryso, that the point may swing rearwardl-y' away'frorn the obstruction upon the further advance of the tool in a normal forward direction. This eliminates any necessity for unhitching the tractor and driving around to the rear in Order to pull the tool away from the obstruction.

Another feature of the present invention is the provision of an improved subsoil plow in which the plow beam is made up of a member, or members, which extends generally forwardly and upwardly from the tool shank and is provided with relatively short ground engaging shoe means, disposed principally rearwardly of the shank, so

as to provide a structure in which trash and the like readily frees itself from the tool. A subseller of this type can be operated under weedy conditions where subsoilers having relatively long shoes tend to be forced out of the ground by trash and the like accumulating underneath the particular feature of the present invention is the] construction of latch means for releasably holding the shank in an operating position and which, nevertheless, readily accommodates the disposition of the shank into the aforesaid transport position.

t is an. di ional. feature of e r s n in-l venti'on to provide a subsoil plow or similar tool in whih he tool i isil f n. b rele e f Q fi 16 beam so as to permit passing, over obstfuctins nd he like and; in. addltlcim to v de suchla.

construction so, a rangedthat the tool may be reset in operating position ereryb backing the; outfit v. v

Th se id oth Q ie ts and advanta es o th present invention will be apparent "to those killedj' nftheart t r a consi eration of we.

ollo ng de m. o ith he'ace par y i g d w n s. n h h. he. jr' i re'd orm o the nvent on has be n;

Irl he ra ings:

Figure l'is a side view of a subsoil device in which t amp es o he p nt inven ion a een 11 1 0 *s eel F ur a man ew of th imp ment. ho n n. ur 1c- Figure 3"i's' a} sectiona view take along the line 3 -3 of Figure 1.,

Figure 4, is. a new man to Figure 1, howing the. p ition or t e shank or tandard. f he. tool w en ar latt r a ee r ea ed, a' f o lear 0 7' pass, over obst ucti ns,

F gu 5. s a view similar to; Fi ure ow ng; the pos tion or the, tool when it has, been. sw ng over into a transport or inoperative position,

Figur 6 is a ide. V ew sh wi g t e. blter' a achment.

Figur 7 i a ection; tak n alo g the ine. 'l Fig re 61.

Re er n now. more par c lar y oF e'flr s 1" and the ubsoi new s i dicat d in its ent re by h ref rence numera and is adapted, o" be,

connected to a. traqtiii. for othersource of power; The beam of the subso l plow lisf indicat d by the; erencfeinume al 5. and comp i es a pair i n les 6 and 1; cenn ted ege he the lr' ob war end by a bol 8. and spaced apart at. area rear ends by a spacer 9 which, as will be referred Q. aten, terms an butment member tq w ch the to 1 is, iatcne r, As iridicatedinFiglure '1,

he b am: L smrmahy disp sed at, a sli htanne o. he. h r zontat, and l mmed,\ s y bol s 1.2 101 3 is such that when the front end of the beam is connected to the tractor 2, the rear sections M of the shoes l3 are generally horizontal and engage the ground surface.

Secured to the rear portions of the angles 6 and I is a pair of upwardly and rearwardly extending bracket plates l1 and I8. Along the lower edge of each bracket plate is a plurality of apertures to receive fastening bolts 2| which also extend through apertures in the spacer member 9 and in registering apertures in the vertical flanges of the angles 6 and 1. When the bolts 2| are tightened the rear ends of the angles 6 and i are fixed in laterally spaced apart relation and at the same time the spacer 9 and the bracket plates I1 and |8 are rigidly secured in position. The upper portion of each of the bracket plates H and I8 is apertured to receive a pivot pin which pivotally connects the upper end of a vertical shank or standard 26, to the lower end or which a subsoil tool 21 is connected. The shank or standard 26 extends downwardly through the space between the shoes l3 and the rear ends of the angles 6 and I. The point 21, together with the shank or standard 2.), is adapted to be swung rearwardly and upwardly in the event the point strikes a stump, stone or other obstruction during operation. The forward edge of the shank is sharpened, as at 30.

A latching member 3| is pivoted at its rear end to the shank Z6 and at its forward end is releasably connected with the abutment memher 9. Preferably, the latch member 3| is made up of a pair of straps 32 and 33, the rear end of each of which is apertured to receive a pivot pin 35 which passes through any one of a number of opemngs 35 formed in the shank or standard 26. Likewise, a pluranty of opemngs 3] are pro vided in the upper end or the shank or standard 26, through any one of which the upper pivot pin 25 is disposed. By removing the pins 2:: and 35 and inserting them in different openings 35 and 31, the position of the tool 21 may be raised or lowered. The front end of each or the strap members 32 and 33 is extended forwardly, as at 4| and 42, and a pin 43 is fixed to the front portion of the straps 32 and 35 in such position that it is adapted to engage in front of an abutment section 44 that is formed on the upper side of the spacer member 9. li' desired, a roller 45 may be mounted on the pin 43.

For controlling the latching and unlatching of the tool 21, there is provided a trip lever til which is pivoted, as at 62, to the frame angles 6 and 1 and has a lower apertured ear 63 which is formed to receive the rear end of a spring 64, the front end of which is connected, as by a bolt or pin 65, to the beam I. The trip lever 6| is formed with a lower nose section :51, which is adapted to underlie the pin 43, and an upper section 08 which overlies the pin 43 when the latter is in a position engaging the abutment nose 44. A cable C is attached to the upper end 69 of the trip ard 26. The latch member 3| is confined between the bracket plates i1 and H3 and the strap members 32 and 33 straddle the nose portion 44 of the abutment member, except when the tool is released. Therefore, after release, the outfit may be backed, which rocks the tool forwardly and downwardly into an operating position, the pin 43 being guided into a position in front of the nose portion 34 by the upper trip lever section 68, which section is adapted to ride over the pin 43 and hold the latter in position, under the action of the spring 64.

In normal operation, the beam I extends forwardly and upwardly at a slight angle, and the shoes I3 are constructed and arranged to bear only on the soil behind the shank or standard 26. When constructed as shown and described above, there is ample clearance for trash and the like to free itself from the implement without tending to raise the tool out of the ground. This latter effect is also due to the fact that the shoes l3 make only a relatively small area of contact with the ground. Moreover, the sharpened edge 36 tends to cut through trash and the like so that there is little tendency for trash and the like to gather on the shank 25.

The implement may be arranged for transport by releasing the trip lever 6! and then manually swinging the shank or standard 23 rearwardly upwardly and over into a position overlying the beam, as shown in Figure 5. In order to hold the tool in this position, there is provided a spacing bushing H mounted on a bolt 72 that extends through the two bracket plates I"! and I8. The bolt 72 is so placed that when the tool shank or standard is swung rearwardly, upwardly and over into its transport position, the tool shank is thus supported in that position by the bolt 12. When the standard 26 is thus swung into an inoperative position the latch member 3|, being pivotally connected to the standard 26, moves with the latter into its transport position. However, the parts are so constructed and arranged that the abutment-engaging pin 33 is adapted to engage an adjacent part of the subsoil shoe 2'! and thus prevent the latch member from swinging out of position.

For operating under very trashy conditions, we prefer to employ a colter attachment indicated in its entirety in Figure 6 by the reference numeral 88. The colter attachment comprises a rolling colter 8| on opposite sides of which is 58- cured a pair of hub members 83 and 84 secured to the colter disk 8| in any suitable manner, such as three bolts 85. The colter 8| and its hub members are mounted for rotation on a sleeve 8'1 which is disposed over a clamping bolt 88 and between a pair of colter brackets 93. Each of the latter is provided with a hook section 9| and a lower apertured portion :12 receiving the ends of the bolt 83. The hook portions 9| of the colter brackets 93 are apertured to receive the bolt 88, and the parts are so proportioned and dimensioned that when the colter bracket sections 9| are hooked over the horizontal flanges of the beam angles 5 and 7 and the bolt 83 tightened, the two brackets are clamped firmly to the beam angles with a pinching action on the sleeve 81 caused by generally rocking movement of the brackets about the edges of the angle flanges as axes.

When the bolt 88 is loosened, the colter attachment may be shifted manually either forwardly or rearwardly, as desired, to adjust the depth of operation of the colter disk 8|.

absence;

' While we haveshownand described above the preferred structure in which the principles of the present invention have been illustrated, it is to be understood that our invention is not to be lim ited' to the particular details, shown and described above, but that, in fact, widely different means may be employed in the practice of the broader aspects of our invention.

What we claim, therefore, and desire to secure by Letters Patent is:

l. A subsoil plow comprising a generally fore and aft extending beam including 'a pair of members connected together at their front ends and spaced apart at their rear ends, a-pair of brackets extending upwardly from said beam and'fixed at their lower portions to the rear portions of said members in laterally spaced apart relation, awsubsoil tool including a shank extending generally upwardly between said brackets and pivoted to the latter at its upper end, an abutment fixed to said beam members in a position forward of said shank, a latch member comprising a pair of straps pivoted to said shank and disposed on opposite sides of the latter, said strap members extending along opposite sides of said abutment member and forwardly thereof and having a part carried between said strap members and adapted to engage said abutment member, and a release lever pivoted to said beam and disposed between said strap members.

2. The invention set forth in claim 1, further characterized by means on said trip lever for guiding the latch member into locking engagement with said abutment member.

3. In a subsoil plow or the like having a beam member and a shank member pivoted to the upper rear portion of the beam member and swingable, when released, rearwardly, latching mechanism for holding said shank in operative position, comprising an abutment carried by said beam forward of said shank, a pair of straps pivoted to said shank on opposite sides thereof, a part carried by said straps between the latter and adapted to engage in front of said abutment member, said straps extending forwardly beyond said part, and a trip lever pivoted to said beam and disposed between the forward extended portions of said strap members and having a first section adapted to engage said part, whereby when said trip lever is moved in one direction, said part is released from said abutment member, and a second section adapted to react against said part for guiding the latter into an abutmentengaging position when the shank is swung forwardly relative to said beam after a release therefrom.

4. A subsoil plow comprising a generally fore and aft extending beam member having a pair of upstanding brackets at its rear end disposed in spaced apart relation, a subsoil tool including a generally vertically disposed shank pivotally connected at its upper end to the upper ends of said brackets and swingable rearwardly therefrom upon release from said beam, means for releasably connecting said standard to said beam, and an abutment on said brackets forward of said standard for supporting the latter when it is swung rearwardly and then upwardly and forwardly into a transport position generally over said beam.

5. A subsoil plow comprising a generally fore and aft extending beam including a pair of members spaced apart at their rear ends, a pair of upstanding brackets fixed, respectively, to said members, a subsoil tool including a generally ver- 6" tically disposed shank as "upon encountering an obstruction, grounde'n gaging shoe meanscarriedb'y said members a-nd' ing-said standard in-operative position including-- a-member' pivoted to said standard and extend ing forwardly along said' beam between saidbrackets and means for releasably engaging said last named member with said beam, said last named member being shiftable -rearwardly from" its position between said brackets when the subsoil tool is swung rearwardly an'd upwardlyawayfrom its operative position, and means on said brackets Y for supporting said tool shank and said latching member'pivoted to the-shank when the latter'has beenswurig into a-transportpo'sition;

.6. In a subsoil plow, a pair of laterall spaced apart brackets, a subsoil tool including 'a shank pivoted at its upper end to the upper end 'of'said brackets and swingable rearwardlyand upwardly therefrom and over into a position extending generally forwardly, a latching member pivoted to said shank and normally disposed between said brackets but being swingable away from the latter when said shank is swung upwardly and over into its transport position, means on said bracket for holding said shank in its transport position, and means on said latching member engageable with said subsoil tool for holding said latching member in its transport position.

7. The invention set forth in claim 6, further characterized by a beam member to which said brackets are fixed, said latching member comprising a pair of straps disposed on opposite sides of and pivoted to said shank, an abutment member carried by said beam between said brackets, a part On said straps releasably engageable with said abutment member, a trip lever carried by said beam and engageable with said part for disengaging the latter from said abutment member, said part being engageable with said subsoil tool when the latter is in its transport position to prevent said latch member from swinging out of its transport position when the subsoil tool is in its transport position.

8. A subsoil plow comprising a generally fore and aft extending beam, a shank pivotally connected at its upper end with said beam and carrying a subsoiler point at its lower end, a latch member pivotally connected to said shank, an abutment carried at the forward end of said latch member, an abutment section carried by said beam forward of said shank to releasably receive said abutment for locking said shank in position, and a trip lever pivoted to said beam adjacent said abutment section, said trip lever including a first part overlying said abutment for holding the latter in engaged position with said abutment section and a second portion underlying said abutment and adapted When said trip lever is swung forwardly to positively disengage said abutment from said abutment section for releasing said shank.

9. In a subsoil plow or the like having a beam member and a shank member pivoted to the upper rear portion of the beam member and swingable, when released, rearwardly, latching mechanism for holding said shank in operative position, comprising an abutment carried by said beam forward of said shank, a lock member pivotally connected with said shank, a part carried by said lock member and adapted to enpivotedat" its upper end to the-upper ends of saidbracket's andsw-ing' abl'e'rearwardly and upwardly about said pivot-,

beam member and a shank member pivoted to the upper rear portion of the beam member and swingable, when released, rearwardly, latching mechanism for holding said shank in operative position, comprising an abutment carried by said beam forward of said shank, a lock member pivotally connected with said shank, a part carried by said lock member and adapted to engage in front of said abutment member, and a trip lever mova-bl connected with said beam and having a first section adapted to engage said part, whereby when said trip lever is moved in one direction, said part is released from said abutment member, and a second section adapted to react against said part for holding the latter in an abutment-engaging position.

CURTISS L. COOK. AUSTIN E. YOUNG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 856,200 Allin June 11, 1907 1,525,873 Lock Feb. 10, 1925 1,611,011 Ferguson Dec. 14, 1926 1,625,278 Paul Apr. 19, 1927 1,855,604 Lindeman Apr. 26, 1932 2,401,139 Cook May 28, 1946 FOREIGN PATENTS Number Country Date 402,506 Great Britain Dec. 7, 1933 

